Exhaust-regulator.



R. WALKER.

EXHAUST REGULATOR.

APPLICATION FILED JULY 11, 1913.

1,1 1 9,331, Patented Dec.1,1914.

THE NORRIS PETERS C0..PH0101./7H0,WASHINGmN. D. C.

T @FTQ.

RALPH WALKER, OF .ANTLER, NORTH DAKOTA..

EXHAUST-REGULATOR.

Application filed July 8, 1913.

To all 107mm it may concern:

Be it known that I, RALPH l/VALKER, citizen of the United States,residing at Antler, in the county of Bottineau and State of NorthDakota, have invented certain new and useful Improvements inExhaust-Regulators, of which the following is a specification.

This invention relates to means for regulating the exhaust in that typeof traction engines in which the exhaust from the cylinder is utilizedto maintain the draft through the fire-box and the boiler.

The object of the invention is to provide simple and easily manipulatedmeans where by the area of the unobstructed surface at the terminal ofthe exhaust nozzle may be varied so as to regulate the draft accordingto the exigencies of any particular set of circumstances.

The invention is illustrated in the accompanying drawings and will behereinafter fully described, the novel features being subsequentlypointed out in the claims following the description.

In the drawings :Figure 1 is a perspective view of the front end of atraction engine showing my improved attachment applied thereto by dottedlines; F ig. 2 is a transverse section through the lower end of thesmoke stack and thefront end of the boiler; Fig. 3 is an enlarged planview of the exhaust nozzle showing my improved attachment in positionthereon. Fig. 4 is an enlarged section of the nozzle and the partsadjacent thereto.

The traction engine is constructed with the usual boiler 1 and a smokestack 2 rising from the free space between the front ends of the firetubes and the front plate 3 of the boiler. The pipe 4c through which theexhaust steam escapes from the engine cvlinder has its front end carriedthrough the wall of the boiler and terminated directly below the smokestack 2 in an exhaust nozzle 5. The mouth of the nozzle is constructedto present divergent arcs springing upward and outward from the centralvertical plane of the nozzle, and damper bars 6 and 7 are adapted toplay over the said arcs and seat in the notches formed by the meetingends thereof. These bars 6 and 7 are of different diameters and arecarried by bails or swinging arms 8 which are pivotally attached to thenozzle at the opposite Specification of Letters Patent Serial No.777,977.

sides of the same and at the points forming centers of the aforesaidarcs. An operating rod 9extends through the side of the boiler and isconnected at its inner end to a bail or link 10 which is pivotal yattached to both of the vibratory arms or bails 8. The said bails withthe damper bars carried thereby are consequently caused to swingsimultaneously when the operating rod or handle is actuated and theforce of the exhaust may be controlled by shifting the damper bars, aswill be readily understood.

If the handle or operating rod 9 be moved inwardly to an extentsufficient to hold the bars (3 and 7 at opposite sides of the center ofthe nozzle and. substantially over the edge of the nozzle, the mouth ofthe nozzle will be unobstructed. If the operating rod be moved outwardto its extreme position, as shown in Fig. 2, the smaller rod 6 will seatin the notched mouth of the nozzle and a stronger draft through the firebox will be produced. If the handle be moved inwardly to the limit ofits movement, the larger rod or bar 7 will be seated in the notchedmouth of the exhaust nozzle and, consequently, a further increase in thedraft through the fire-box will be effected. The operating rod or handleis provided with notches 11 in its lower edge adapted to engage the wallof the boiler so as to hold the rod in the position in which it may beset.

It will be readily noted that my device is exceedingly simple in itsconstruction and 'may be applied to any boiler in which the exhaust fromthe engine cylinder is utilized to promote the draft through the firechamher.

What I claim is 1. The combination with an exhaust nozzle having seatsformed in the edges of its mouth, of damper members of unequal width.and means for simultaneously moving said damper members in the samedirection and causing one of them at a time to engage said seats andextend across the center of the nozzle.

2. The combination with an exhaust nozzle, of vibratory memberspivotally mounted upon opposite sides of the nozzle, damper rods ofdifferent diameters carried by said members, and means forsimultaneously operating said vibratory members whereby to hold saidrods at the sides of the Patented Dec-.1, 1914.;

hers, and means for'simultaneously operat- 10 mg said vibratory members.

In testimony whereof I affix my signature in presence of two Witnesses.

RALPH WALKER. [11s.

Witnesses:

F. A. RINKEL, J B. CoNLIN.

nozzle or one of the rods across the mouth of the nozzle.

3. The combination with an exhaust nozzle having its mouth provided Withan edge formed on divergent arcs, vibratory members pivotally mountedupon the opposite sides of the nozzle at the centers of the respectivearcs, damper devices of different diameters carried by said vibratorymem- Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, D. 0.

